<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .box1 {
            width: 200px;
            height: 200px;
            border: 1px solid red;
            display: flex;
        }

        .div {
            flex: 1;
        }

        .div1 {
            width: 100px;
            height: 100px;
            border: 1px solid #fff;
            background-color: lightcoral;
        }

        .div2 {
            width: 100px;
            height: 100px;
            border: 1px solid #fff;
            background-color: lightgreen;
        }

        .div3 {
            flex: 1;
            width: 100px;
            height: 200px;
            border: 1px solid #fff;
            background-color: lightpink;
        }

        /* 2 */
        .box2 {
            margin-top: 20px;
            width: 300px;
            height: 500px;
            border: 1px solid blueviolet;
            display: flex;
            flex-direction: column;
            text-align: center;
        }

        .f1 {
            flex: 1;

            background-color: lightseagreen;
            text-align: center;
        }

        .f3 {
            flex: 1;
            background-color: #027771;
            text-align: center;
            align-items: flex-end;
        }

        .f2 {
            flex: 6;
            overflow: hidden;
            overflow-y: scroll;
            background-color: orange;
        }

        .f5 :nth-child(1) {
            background-color: #fff;
        }

        ::-webkit-scrollbar {
            display: none;
        }

        .box3 {
            margin-top: 20px;
            width: 1200px;
            height: 400px;
            border: 1px solid lightseagreen;
            display: flex;
            flex-direction: column;
        }

        .d1 {
            flex: 1;
            display: flex;
        }

        .b1 {
            flex: 1;
            background-color: mediumvioletred;
        }

        .b2 {
            flex: 9;
            background-color: mediumorchid;
        }

        .d3 {
            flex: 1;
            background-color: mediumslateblue;
        }

        .d2 {
            flex: 4;
            display: flex;
        }

        .s1 {
            flex: 3;
            background-color: mediumspringgreen;
        }

        .s2 {
            flex: 4;
            background-color: mediumvioletred;
        }

        .s3 {
            flex: 2;
            background-color: navy;
        }
    </style>
</head>

<body>
    <div class="box1">
        <div class="div">
            <div class="div1">11</div>
            <div class="div2">22</div>
        </div>
        <div class="div3">33</div>
    </div>
    <div class="box2">
        <div class="f1">啊啊</div>
        <div class="f2">
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
            <div class="f5">55555</div>
        </div>
        <div class="f3">嘿嘿</div>
    </div>
    <div class="box3">
        <div class="d1">
            <div class="b1">12323</div>
            <div class="b2">45677</div>
        </div>
        <div class="d2">
            <div class="s1">123</div>
            <div class="s2">1234</div>
            <div class="s3">12345</div>
        </div>
        <div class="d3">123</div>
    </div>
</body>

</html>